Bushing.



E. H. WAUGH.

BUSHING.

APPLICATION FILED IULY 22.1912.

Patented June 12, 1917.

SS AN Fl@.

EDWARD H. WAUGI-I, 0F SEATTLE, VJA-SHINGTON, ASSIGNOR TO JOHN W. WINNING'rI-IAM, OF SEATTLE, WASHINGTON.

BUSHING.

Application filed July 22, 1912.

To all whom it may concern:

Be it known that I, EDWARD H. WVAUGH, a citizen of the United States ofAmerica, and a resident of the city of Seattle, in the county of Kingand State of Washington, have invented certain new and usefulImprovements in Bushings, of which the following is a specification.

My invention has for its primary object to provide a device of the abovetype through the medium of which rotatable driving and driven elementsare connected in an efficient manner for movement of one with the other.

The invention resides in the features of construction, arrangements andcombinations of parts hereinafter described and succinctly defined in myannexed claims.

Referring to the accompanying drawing wherein like numerals of referenceindicate like parts throughout:

Figure 1 is a section illustrating a cutter head equipped with myimproved bushing.

Fig. 2 is a plan thereof, and

Fig. 3 is a horizontal section on line 33 of Fig. 1.

My bushing comprises a hollow sleeve 1, adapted to engage in the bore ofthe cutter head, or pulley or other power transmitting element, as 5,and to receive a shaft or spindle, as 4.

Sleeve 1 for its major portion is cylindrical in form and provided withexternal screw threads 2, these preferably extending in a directionopposite to the direction of rotation of element 5, to thereby preventaccidental loosening of said element, and being of the ratchet type andengaging similar threads in the bore of element 5 to thereby obtainabrupt spirally extending meeting faces or shoulders opposing endwi'sethrust incident to element 5 being forced against an external shoulder 3of the sleeve.

Shoulder 3 is provided at the freeor in ner end portion of the bushingand tapers toward the external screw threaded portion 2. Bushing 1 isfurther split longitudinally, as at 6, the slits extending lengthwise ofthe bushing and through threaded portion 2 thereof so that as theelement 5 is screwed down onto the shoulder or tapered portion 3, therespective longitudinal sections of the bushing will be sprung inwardlyinto tight clamping relation with shaft l, which action brings theengaging teeth 2 into slight Specification of Letters Patent.

Patented June 112, 1917.

Serial No. 710,942.

angular relation with respect to the teeth of element 5 and therebyfirmly locks element 5 on the bushing.

One end portion of the bore of element 5 is slightly tapered, as at 3,for reception of shoulder 3, as is apparent.

Reference numeral 7 indicates an adjusting screw, threaded in the outerend portion of bushing 1 and opposing theadjacent end surface of spindle4E, and 8 indicates sockets in said bushing adapted for reception of asuitable instrument for holding the bushing against rotation duringseating of element 5.

I have shown element 5 as comprising a cutter head, embodying spacedsupports 9, 9 between which suitable cutters 10 are fitted, the saidcutters serving as sustaining spacers for said supports the former ofwhich is provided with screw threads for engagement with the threads 2,and the latter provided with the tapered opening 3. Clamping bolts 11pass through supports 9, 9 and the cutters 10, these bolts preferablyhaving their heads countersunk in support 9 and having their threadedend portions projecting through support 9 and provided with nuts 12. Bythus forming the cutter head of separate supports, and providing onethereof with the tapered opening 3, tapered bushing portion 3 actsconjointly with bolts 11 to draw and hold support 9 to a desiredrelation with respect to support 9, for clamping the cutters.

Having thus described my invention what I claim as new, and desire tosecure by Let ters Patent of the United States of America, 1s:

1. The combination with a shaft member. of a member to be securedthereto against relative rotation, a sleeve interposed between themembers and having a portion that tapers from one end inwardly, and asmaller exteriorly threaded portion screwed into the second member, saidsleeve having slits from one end through the threaded portion andterminating short of the other end, the smaller threaded portionprojecting beyond the member in which it is placed and having meanswhereby it can be turned.

2. The combination with a shaft member, of a member to be securedthereto against relative rotation, a sleeve interposed between themembers and having an enlarged tapered portion and a smaller exteriorlythreaded portion screwed into the second member, said sleeve havingslits from one end through the threaded portion and terminating short ofthe other end, said other end being closed and projecting beyond themember in which it is placed, and a screw threaded through said closedend and bearing against the end of the shaft member.

3. The combination with a shaft member, of a member to be securedthereto and cornprising spaced elements, one of which has a taperedbore, another of said spaced elements having internal screw threads,means connecting the elements to hold them against relative rotation, asleeve interposed between the members, said sleeve having a taperedportion engaged in the tapered bore of one element and having anexternally threaded portion screwed into the bore of the said otherelement, said sleeve furthermore being longitudinally split, said sleevealso con.- stituting supplemental means for drawing the elements towardeach other.

f. The combination with a shaft member, of a. split sleeve thereonhaving ratchet threads and a tapered portion, and a member surroundingthe sleeve and mounted directly thereon, said member comprising spacedelements, means connecting the elements for drawing them toward eachother, one of said elements being located on the tapered portion of thesleeve, another of said elements having a threaded engagement with saidsleeve, and said. sleeve constituting supplemental means for securingthespaced elements together.

5. The combination with a shaft member and amember to be securedthereon, of a sleeve having a non-tapered clamping section interposedbetween said members and slit lengthwise, said clamping section of thesleeve and one of the members having threaded engagement, said memberand a part of the sleeve having other surfaces on gaging to resist axialmovement.

6. The combination with a shaft member and a member to be securedthereon of a sleeve having a longitudinally slitted clamping sectionadapted to be interposed between the said two members, said interposedsection of the sleeve and one of the said members having engagingthreads and other surfaces engaging to resist relative axial movements.

7. The combination with a shaft member and a member to be securedthereon. of a sleeve, said sleeve having a longitudinally slittedclamping section adapted to be interposed between said members, saidsleeve and one of the members having surfaces engaging to resistrelative axial movements, said member and the slitted clamping sectionof the sleeve having engaging threads in which one flank has an abruptface and the other flank is gently sloping, said latter flank beingpositioned to resist relative axial movement in opposition to said othermentioned engaging surfaces of the like parts.

8. The combination with a shaft member and a member to be securedthereon, of a sleeve adapted to be interposed between said members, aninterposed section of the sleeve and the opposed surfaces of the shaftand of the member to be secured thereto, being non-tapered, saidinterposed section of the sleeve being longitudinally slit, one end ofthe sleeve and one of the other members having surfaces engaging toresist relative axial movement, the last mentioned member and theslitted portion of the sleeve having threaded engagement, the flanks ofthe threads being of unequal angular inclination with the lowe angledflank placed to pro duce an axial thrust between said other mentionedthrust surfaces.

9. In a cutter head, in combination, a shaft, two axially separatedframe members, cutter elements placed between said frame membersoutwardly of the shaft, and. a clamping sleeve interposed between theshaft and said frame members, one end of said sleeve having axial thrustbearing upon one of the frame members, and threaded engagement with theother frame member, the part of the sleeve which engages with saidlatter frame member being longitudinally slit.

10. In a cutter head, in combination, a shaft, two axially separatedframe members, cutter elements placed between said frame membersoutwardly of the shaft, means for holding said cutting elements inposition, and a clamping sleeve interposed between the shaft and saidframe members, one end of said sleeve having axial thrust bearing uponone i of the frame members, and threaded engagement with the other framemember, the part of the sleeve which engages with said latter framemember being longitudinally slit.

11. The combination with a'shaft, and a member to be secured thereon, ofa clamping sleeve adapted to be interposed between said member and theshaft, said sleeve and said member having conical rotatively engagingsurfaces at one side of the member, the sleeve having a longitudinallyslitted section having threaded engagement with said member extendinginward from the other side of said member.

Signed at Seattle, Washington, this 2nd day of July, 1912.

EDXVARD H. XVAUGH. Witnesses:

i H. D. BUCHANAN,

ARLITA ADAMS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

